//
//  hole.c
//  programing_in_unix
//
//  Created by homcin on 2017/12/9.
//  Copyright © 2017年 tarshe. All rights reserved.
//

#include "apue.h"
#include <fcntl.h>

char buf1[] = "abcedfghij";
char buf2[] = "ABCDEFGHIJ";

int main(void)
{
    int fd;
    
    if ((fd = creat("file.hole", FILE_MODE)) < 0)
        err_sys("create error");
    
    if (write(fd, buf1, 10) != 10)
        err_sys("buf1 write error");
    /* offset now = 10 */
    
    if (lseek(fd, 16384, SEEK_SET) == -1)
        err_sys("lseek error");
    /* offset now = 16384 */
    
    if (write(fd, buf2, 10) != 10)
        err_sys("buf2 write error");
    /* offset now = 16394 */
    
    exit(0);
}
